Engine



7 No. 752,056.- PATENTED FEB. 16, 1904.

I U. FISHER.

ENGINE.

APPLmATmn FILED MAR. 23, 1903.

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No. 752,056." PATENTED r23. 16, 1304.

' G. FISHER ENGINE.-

APPLICATION nun 11.23. 1903.

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UNITED STATES Patented February 1.6, 1904'.

PATENT OFFICE.

CHARLES FISHER, on sTiLLwATEaMmNEsoTA, ASSIGNOR' or oun- HALF TO VERNE L. SWAIN, or STILLWATEB, MINNESOTA.

ENGINE.

SPECIFICATION forming part of Letters Patent No. 752,056, dated February 16, 1904.

Application filed March 23, 1903.

To all whoin, it may concern:

' Be it known that I, CHARLEs FISHER, a citizen of the United States, residing at Stillwater, in the county of Washington and State of Minnesota, have invented certain new and useful Improvements in Engines, of which the folwhich is supported a steam-cylinder 5.

lowing is a specification.

My invention relates to improvements in engines, its object being particularly to'provide a reciprocating-piston rotary-cylinder engine combining the advantages of a reciprocating and a rotary engine.

To this end my invention consists in the features of construction and combination hereinafter particularly described and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 is a top plan of my improved engine. Fig. 2 is a section on line w w of Fig. 1. Fig. 3 is a section of the engine upon line o o of Fig. 2 looking toward the inlet-ports. Fig. 4 is a similar section on line y y of Fig. 2, and Figs. 5 and 6 are sections on line o v with the packing-ring removed and looking toward the piston.

In the drawings, A represents the frame-. work of the engine. Journaled in one side of the frame is a horizontal shaft 2, carrying upon its inner end a crank-disk 3. J ournaled in the-opposite side of the engine below the shaft 2 is a shaft 4, upon the inner end 9 of Within the cylinder 5 is slidably arranged an ordinary piston 6, connected by a piston-rod '7 with a pin 8, secured to one edge of the disk 3. Secured upon the outer end of the shaft 4 is a pulley 10, and interposed between the pulley 10 and the side of the engine is a nut 11, loosely mounted upon the shaft and havingthreaded connection with the engine-frame' work. Thus as the nut 11 is unscrewed it will engage with the pulley 10 to draw the shaft outward and take up wear, the nut being held in adjusted position by a set-screw 26.

Formed in the side wallof the engine adjacent to the shaft 4 are ports 12 and 13, said ports being connected with a throttle-valve chamber 14 by pipes 15 and 16. The throttlevalve' chamber 14: is connected with a source of steam-supply by a pipe 17 and with the Serial No. 149,105. (No model.)

atmosphere by an exhaust-port 1 8. Arranged within the chamber 14 is a valve 19, which may be turned, as illustrated in Fig. 4:, to connect eitherof the pipes 15 and 16 with the inlet steam-pipe and the opposite pipe with the exhaust-port or may be turned to throttle both said pipes.

As illustrated in Figs. .5 and 6, the cylinder is provided with ports 20 and 21 in its opposite ends, which extend through the disk end -9 ofthe shaft 4 and which register with the ports 12 and 13 in the operation of the engine. Arranged in the port 13 is a cut-off valve 22, provided with a transverse opening 23, whereby said valve 22 may be turned to cut off the portion of the port 13 below the valve or by means of its opening 23 permit passage of steam through the entire port.

Interposed between the side wall of the engine and the disk end 9 of the shaft 4 is a packing-ring 24, held in its groove by springs 25.

Operation: W'e will assume that the parts are in the position indicated in Fig. 5, in which position the inlet-ports 20 and 21 of the steamcylinder stand intermediate of the ports 12 and 13 or in'dead-center position. By turning the crank-disk 3 in the direction indicated by. the arrow the port 20 will be brought into communication with the inlet steam-port 13. The steam passing from the inlet-port 13 through the port 20 into the cylinder will actuate the piston, drawing the piston-rod through the cylinder and turning the disk. By comparing Figs. 5 and 6 it will be seen that the above-describedmovement of the piston will rotate the crank-disk on account of the supporting-shafts of the disk and cylinder being out of alinement a distance equal to onehalf of the stroke of the piston. The'continned rotation of the crank-disk will bring the port 20 intocommunication with the exhaust.

port 12 and the port 21 into communication with the inlet-port 13. 'By this time the piston has reached the opposite endofthe cylinder, and during the next half of the cylinder the return movement of-the piston will take place. The crank-disk is large enough to act as a flywheel to carry the engine over deadcenter.

The advantages of the engine over an ,ordinary reciprocating-pistonengine are its highspeed and power on account of there being no Weight to start and stop, economy on account of the cut-ofli taking place very close to the piston, which makes a small clearance, and durability on account of the large wearingsurface of. journals and on account ofbeing in perfect balance.

By means of the valve 19 the port 12 may be turned into inlet and the port 13 into exhaust port to reverse the operation of the engine -By disk supported upon the inner end of one shaft,

a cylinder supported upon the inner end of the other shaft, said cylinder being provided with ports in its opposite ends, apiston slidable in said cylinder, a connection between said piston and the edge of said crank-disk, a pair of curved ports in the adjacent Wall of the engine in line with said cylinder-ports, a cut-off valve in one of saidcurved ports, conduits connecting said ports with a source of steam-supply and with an exhaust-port, and a throttle-valve arranged in connection with said conduits and exhaust-port.

2. In an engine of the class described, the combination of a pair oflseparated shafts arranged parallel and out of alinement, acrankdisk supported upon the inner end of one shaft, a disk 9 constituting the inner end of the other shaft, a cylinder supported upon the face of said disk 9, said cylinder being provided with ports in its opposite ends registering with ports through the disk 9, a piston slidable in said cylinder, a piston-rod connecting said piston with the edge of said crankdisk, a pair of curved ports in the adjacent wall of the engine in line with the ports extending from the cylinder through the disk 9, conduits connectingsaid curved ports with a source of steam-supply and with an exhaustport, and valves arranged-in connection with .said conduits and ports.

In testimony whereof I aflix my signature in presence of two witnesses.

- CHARLES FISHER.

itnesses:

H. S. JoHNsoN, EMILY F. OTIs. 

